Curling leaves please help

was up fellow growers I finally found a problem with my first grow one of many well heres some info I got 5 seedlings in 26 oz cups with Foxfarm seedling soil they are 10 days old on the 7th day I added more soil to the cup FoxFarm Ocean Forest I water every 4 days heres the info on my two problem plants #1 is not branching its growing upwards just a tiny little burn at the tip of one leaf #2 is extremely burned with both leaves brown and curling up please help sorry no pics getting my camera soon

about 2 inces from my seedlums and I water a cup of water or until water drains out all the three holes not just one and my lights are one 20 watt and one 42 watt bulb total 60 watts thats all I can give out now